CN-224232584-U - Modularized disconnecting switch and gas-insulated switchgear

CN224232584UCN 224232584 UCN224232584 UCN 224232584UCN-224232584-U

Abstract

The application relates to the technical field of switch equipment, and provides a modularized isolating switch and a gas-insulated switch cabinet, wherein the modularized isolating switch comprises a transmission shaft, a plurality of moving contacts and a transmission mechanism matched with the moving contacts, one end of each moving contact is hinged with a contact seat, and the other end of each moving contact is a free end; each set of transmission mechanism comprises two first connecting plates sleeved on the transmission shaft on one side, the first connecting plates rotate along with the transmission shaft, the other sides of the two first connecting plates are respectively hinged with one sides of the two second connecting plates, the other sides of the two second connecting plates are connected with cushion blocks through rotating shafts, the middle parts of the cushion blocks are connected with moving contacts through third connecting plates, and the second connecting plates and the cushion blocks are positioned above the contact base so that the free ends of the moving contacts penetrate through a space enclosed by the two second connecting plates and the cushion blocks. Compared with the prior art, the application has lower cost, modular units, mass production and visual judgment of the problem when the overhaul problem occurs.

Inventors

ZHU YONGJIN
ZHANG GAIFENG
Zhou Hongshi
Tao Yihai
DAI YAOHUI

Assignees

上海乾谷电力科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250515

Claims (7)

1. A modularized isolating switch comprises a transmission shaft, a plurality of moving contacts and a transmission mechanism matched with the moving contacts, and is characterized in that, One end of the movable contact is hinged with the contact seat, and the other end of the movable contact is a free end; Each set of transmission mechanism comprises two first connecting plates sleeved on the transmission shaft on one side, the first connecting plates rotate along with the transmission shaft, the other sides of the two first connecting plates are respectively hinged to one sides of the two second connecting plates, the other sides of the two second connecting plates are connected with cushion blocks through rotating shafts, the middle parts of the cushion blocks are connected with moving contacts through third connecting plates, and the second connecting plates and the cushion blocks are positioned above the contact seat so that the free ends of the moving contacts penetrate through a space defined by the two second connecting plates and the cushion blocks.
2. The modular isolator of claim 1, wherein the modular isolator comprises an isolator frame including isolator bracket side plates on left and right sides and isolator bracket bent plates on front and rear sides, the contact mount is mounted on the rear side of the isolator frame, square holes matching the outer contour of the drive shaft are formed in one side of the first connecting plate and the isolator bracket side plates, and the drive shaft is mounted on the front side of the isolator frame through all the square holes.
3. The modular isolator as claimed in claim 1, wherein an isolator insulator support plate is mounted on the rear side of the isolator frame interior, and an insulator is mounted on the isolator insulator support plate, the insulator being in contact with the header.
4. The modularized isolating switch according to claim 1, wherein one end of the transmission shaft extending out of the side plate of the isolating switch bracket is sleeved with a transmission shaft control part, one end of the mechanism crank arm is connected with the three-position switch mechanism, and the other end is movably connected with the transmission shaft control part.
5. The modular isolator as claimed in claim 2, wherein the isolator frame is provided with an isolator ground bar support bend on an interior underside thereof, the isolator ground bar support bend being provided with an isolator ground bar for grounding the induced current.
6. The modular isolation switch of claim 1, wherein a main busbar is provided on an upper side of the modular isolation switch, and a stationary contact is provided on a lower portion of the main busbar.
7. A gas insulated switchgear characterized in that the switchgear comprises; the main busbar is positioned on the upper side of the switch cabinet, two ends of the main busbar are arranged on side plates of the switch cabinet, and a fixed contact is arranged at the lower part of the main busbar; a modular disconnector according to any of claims 1 to 6 located on the underside of the main busbar, the modular disconnector controlling the free ends of the moving contacts to contact and leave the stationary contacts; The three-station switch mechanism is positioned at the lower side of the modularized isolating switch and is connected with a transmission shaft in the modularized isolating switch through a mechanism crank arm.

Description

Modularized disconnecting switch and gas-insulated switchgear Technical Field The application relates to the technical field of switch equipment, in particular to a modularized isolating switch and a gas-insulated switchgear. Background In an electric power system, SF6 gas-insulated metal-enclosed switchgear is used as equipment in the field of medium-voltage distribution, and a conventional configuration scheme mainly comprises a three-station disconnecting switch scheme which is designed in an integrated mode, wherein interlocking control of a line on-off function and a grounding function is achieved through a single operating mechanism, and a three-station disconnecting switch and circuit breaker combination scheme is adopted, and a special circuit breaker module is additionally arranged on the basis of the three-station disconnecting switch scheme to achieve a fault current on-off function. Both of these switching devices have the disadvantage of inconvenient installation and high costs. Disclosure of utility model In order to help solve the technical problems, the application provides a modularized isolating switch and a gas-insulated switchgear. In a first aspect, the present application provides a modularized disconnecting switch, which adopts the following technical scheme: A modularized isolating switch comprises a transmission shaft, a plurality of moving contacts and a transmission mechanism matched with the moving contacts, wherein one end of each moving contact is hinged with a contact seat, and the other end of each moving contact is a free end; Each set of transmission mechanism comprises two first connecting plates sleeved on the transmission shaft on one side, the first connecting plates rotate along with the transmission shaft, the other sides of the two first connecting plates are respectively hinged to one sides of the two second connecting plates, the other sides of the two second connecting plates are connected with cushion blocks through rotating shafts, the middle parts of the cushion blocks are connected with moving contacts through third connecting plates, and the second connecting plates and the cushion blocks are positioned above the contact seat so that the free ends of the moving contacts penetrate through a space defined by the two second connecting plates and the cushion blocks. Preferably, the modularized isolating switch comprises an isolating switch frame, the isolating switch frame comprises isolating switch support side plates positioned at the left side and the right side and isolating switch support bent plates positioned at the front side and the rear side, the contact base is arranged at the rear side inside the isolating switch frame, square holes matched with the outer contour of the transmission shaft are formed in one side of the first connecting plate and the isolating switch support side plates, and the transmission shaft penetrates through all the square holes and is arranged at the front side inside the isolating switch frame. Preferably, an isolating switch insulator supporting plate is arranged at the rear side inside the isolating switch frame, an insulator is arranged on the isolating switch insulator supporting plate, and the insulator is connected with the contact head seat. Preferably, one end of the transmission shaft extending out of the side plate of the isolating switch bracket is sleeved with a transmission shaft control part, one end of the crank arm of the mechanism is connected with the three-station switch mechanism, and the other end of the crank arm of the mechanism is movably connected with the transmission shaft control part. Preferably, an isolating switch grounding bar supporting bent plate is arranged at the lower side of the inner part of the isolating switch frame, and an isolating switch grounding bar is arranged on the isolating switch grounding bar supporting bent plate and used for grounding induced current. Preferably, a main busbar is arranged on the upper side of the modularized isolating switch, and a fixed contact is arranged on the lower portion of the main busbar. In a second aspect, the application provides a gas-insulated switchgear, which adopts the following technical scheme: A gas insulated switchgear, wherein the switchgear comprises; the main busbar is positioned on the upper side of the switch cabinet, two ends of the main busbar are arranged on side plates of the switch cabinet, and a fixed contact is arranged at the lower part of the main busbar; A modular disconnector according to any of the preceding claims, located on the underside of the main busbar, the modular disconnector controlling the free ends of the moving contacts to contact and leave the stationary contacts; The three-station switch mechanism is positioned at the lower side of the modularized isolating switch and is connected with a transmission shaft in the modularized isolating switch through a mechanism crank arm. In summary, the application has t